JPWO2004058002A1 - Ultrasonic mouth cleaning tool - Google Patents

Ultrasonic mouth cleaning tool Download PDF

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JPWO2004058002A1
JPWO2004058002A1 JP2004562897A JP2004562897A JPWO2004058002A1 JP WO2004058002 A1 JPWO2004058002 A1 JP WO2004058002A1 JP 2004562897 A JP2004562897 A JP 2004562897A JP 2004562897 A JP2004562897 A JP 2004562897A JP WO2004058002 A1 JPWO2004058002 A1 JP WO2004058002A1
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liquid
liquid reservoir
ultrasonic
cleaning tool
head
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正治 喜多
正治 喜多
森　豊一
豊一 森
徹 齊藤
徹 齊藤
正洋 西浦
正洋 西浦
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Sunstar Inc
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Sunstar Inc
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/225—Handles or details thereof
    • A61C17/227—Handles or details thereof with reservoirs, e.g. for toothpaste
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
    • A61C17/0202—Hand-pieces
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/20—Power-driven cleaning or polishing devices using ultrasonics
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
    • A46B11/001—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Brushes (AREA)

Abstract

水溜りに空気層が生じることがなく伝達効率を維持できる程度のより少ない洗浄用液を供給することで効率良く口腔清掃することができ、使い勝手が良く、設計上の自由度も大きい超音波口腔清掃具を提供することをテーマとし、このテーマを達成すべく、先端のヘッド部に突設され、その突出方向に沿った先端側が開放された液溜め部と、該液溜め部の下方に配設された超音波発生部と、発生した超音波の振動伝達媒体としての洗浄用液を前記液溜め部に供給するための供給手段とを備えさせ、前記洗浄用液の１秒当たりの供給量を、前記液溜め部の内部容積の１／１０〜６／５とした。An ultrasonic oral cavity that can efficiently clean the oral cavity by supplying less cleaning liquid that can maintain transmission efficiency without generating an air layer in the puddle, and is easy to use and has a high degree of design freedom The theme is to provide a cleaning tool, and in order to achieve this theme, there is a liquid reservoir part protruding from the head part at the front end and opened at the front end side along the protruding direction, and disposed below the liquid storage part. An ultrasonic generator provided, and a supply means for supplying a cleaning liquid as a vibration transmission medium of the generated ultrasonic waves to the liquid reservoir, and the supply amount of the cleaning liquid per second Was 1/10 to 6/5 of the internal volume of the liquid reservoir.

Description

本発明は、超音波を利用して洗浄を行う超音波口腔清掃具に係わり、より詳しくは、洗浄用液を振動伝達媒体として効率よく洗浄できる超音波口腔清掃具に関する。  The present invention relates to an ultrasonic oral cleaning tool that performs cleaning using ultrasonic waves, and more particularly, to an ultrasonic oral cleaning tool that can be efficiently cleaned using a cleaning liquid as a vibration transmission medium.

従来、日本国特許出願公表平成７年第５０９１５１号公報では、手動の歯ブラシのヘッド部に圧電変換器を取り付け、共振周波数又はその付近で共振する圧電結晶が、毛の間で超音波を発射して、エネルギーを使用者の口の中で歯みがき剤を介して歯の表面に結合させ、軟らかい歯垢を除去するとともに口内炎の処理及び防止を行うことが可能な超音波歯ブラシが提案されている。しかし、このような歯ブラシでは毛束の届かない歯周ポケット内の歯垢を十分に除去することはできなかった。
一方、日本国特許出願公開平成９年第２０６１３０号公報では、歯ブラシのヘッド部に洗浄水の溜まりやすい空間を構成し、水溜まりに洗浄水を供給するとともにその空間後方に装着する超音波発生器の発生する超音波の作用によって歯垢や汚れ物を剥離、乳化させ除去する超音波歯ブラシが提案されている。
また、日本国特許出願公開２００１−８７３６号公報では、同じく超音波の作用で歯垢等を落とす超音波歯ブラシであって、洗浄中における洗浄水の口からの漏れ出しを防止すべく排水口を設けたものも提案されている。
これら超音波歯ブラシにおいては、供給された洗浄水を振動伝達媒体として超音波が口腔内に作用するため、伝達効率の低下要因となる空気層が前記水溜りに生じないように多量の洗浄水が供給されるが、このように多量に供給された洗浄水は常時口から溢れ出るため、洗浄中は洗面台に受けておく必要があり使い勝手が悪く、また、上記日本国特許出願公開２００１−８７３６号公報に記載の超音波歯ブラシのように、口からの漏れ出しを防止できたとしても一定量以上の洗浄水を蓄えた給水タンクは歯ブラシとは別体で構成する必要があり、該タンクからの給水管を歯ブラシの柄部に接続して使用するものであり設計上の自由度も低かった。
そこで、本発明が前述の状況に鑑み、解決しようとするところは、水溜りに空気層が生じることがなく伝達効率を維持できる程度のより少ない洗浄用液を供給することで効率良く口腔清掃することができ、使い勝手が良く、設計上の自由度も大きい超音波口腔清掃具を提供する点にある。Conventionally, in Japanese Patent Application Publication No. 1995-509151, a piezoelectric transducer is attached to the head portion of a manual toothbrush, and a piezoelectric crystal that resonates at or near the resonance frequency emits ultrasonic waves between hairs. Thus, there has been proposed an ultrasonic toothbrush capable of binding soft energy in the user's mouth to the tooth surface via a dentifrice, removing soft plaque, and treating and preventing stomatitis. However, such a toothbrush has not been able to sufficiently remove plaque in the periodontal pocket where the hair bundle cannot reach.
On the other hand, in Japanese Patent Application Publication No. 206130 of the Japanese Patent Application Publication, an ultrasonic generator that forms a space in which the washing water easily collects in the head part of the toothbrush, supplies cleaning water to the water reservoir, and is mounted behind the space. There has been proposed an ultrasonic toothbrush that peels, emulsifies and removes plaque and dirt by the action of generated ultrasonic waves.
Japanese Patent Application Publication No. 2001-8736 also discloses an ultrasonic toothbrush that removes plaque and the like by the action of ultrasonic waves, and has a drain outlet to prevent leakage from the mouth of cleaning water during cleaning. Some have been proposed.
In these ultrasonic toothbrushes, since ultrasonic waves act on the oral cavity using the supplied cleaning water as a vibration transmission medium, a large amount of cleaning water is generated so that an air layer that causes a decrease in transmission efficiency does not occur in the pool. Although the washing water supplied in such a large amount always overflows from the mouth, it is necessary to receive it in the wash basin during washing, which is inconvenient, and the above-mentioned Japanese Patent Application Publication No. 2001-8736. Even if the leakage from the mouth can be prevented as in the ultrasonic toothbrush described in the Gazette, the water supply tank that stores a certain amount or more of washing water needs to be configured separately from the toothbrush. The water supply pipe was connected to the handle of the toothbrush and used, and the design freedom was low.
Therefore, in view of the above-described situation, the present invention intends to solve the problem by efficiently cleaning the oral cavity by supplying a less cleaning liquid that can maintain transmission efficiency without causing an air layer in the water pool. It is possible to provide an ultrasonic oral cleaning tool that can be used, is easy to use, and has a high degree of design freedom.

本発明の超音波口腔清掃具は、前述の課題解決のために、先端のヘッド部に突設され、その突出方向に沿った先端側が開放された液溜め部と、該液溜め部の下方に配設された超音波発生部と、発生した超音波の振動伝達媒体としての洗浄用液を前記液溜め部に供給するための供給手段とを備えさせ、前記洗浄用液の１秒当たりの供給量を、前記液溜め部の内部容積の１／１０〜６／５としたことを特徴とする。
ここで、前記液溜め部は、内部容積が０．０１〜１．０ｍＬ、好ましくは０．０１〜０．５ｍＬとされ、また、開口面積が３．０〜１００ｍｍ２、好ましくは３．０〜３０ｍｍ２とされることが好ましい。
また、前記液溜め部が、前記歯ブラシのヘッド部に設けた筒状の弾性部材からなるものが好ましく、該弾性部材の厚みは０．１〜３．０ｍｍであることが好ましい。
更に、前記ヘッド部に、毛束が植設されたブラシ部を設けてなるものが好ましく、該ブラシ部の複数の毛束で囲まれた内部に前記液溜め部を設けてなるものや、前記ブラシ部の隣りに前記液溜め部を併設してなるものが好ましい実施例である。
具体的には、前記ヘッド部が、前記液溜め部と超音波発生部を備えた分割ヘッド部と、前記毛束が植設されるブラシ部を備えた分割ヘッド部とを併設してなるものが好ましい。
また、前記ヘッド部に毛束が植設されたブラシ部を設け、該ブラシ部の毛束により前記液溜め部の内壁を構成してなるものも好ましい実施例である。
更に、前記液溜め部に洗浄用液を供給するための送液路を内部に設け、該送液路末端の開口部又は途中部に逆止弁を設けてなるものが好ましい。
また、前記液溜め部に洗浄用液を供給するための貯液タンクをハンドル部の内部に設けてなるものが好ましい。In order to solve the above-described problem, the ultrasonic oral cleaning tool of the present invention is provided with a liquid reservoir portion protruding from the head portion at the distal end and opened at the distal end side along the protruding direction, and below the liquid reservoir portion. An ultrasonic generator provided and a supply means for supplying a cleaning liquid as a vibration transmission medium of the generated ultrasonic waves to the liquid reservoir, and supplying the cleaning liquid per second The amount is set to 1/10 to 6/5 of the internal volume of the liquid reservoir.
Here, the liquid reservoir has an internal volume of 0.01 to 1.0 mL, preferably 0.01 to 0.5 mL, and an opening area of 3.0 to 100 mm 2 , preferably 3.0 to It is preferable to be 30 mm 2 .
The liquid reservoir is preferably made of a cylindrical elastic member provided on the head part of the toothbrush, and the elastic member preferably has a thickness of 0.1 to 3.0 mm.
Furthermore, it is preferable that the head portion is provided with a brush portion in which hair bundles are implanted, and the liquid reservoir portion is provided inside the brush portion surrounded by a plurality of hair bundles, A preferred embodiment is one in which the liquid reservoir is provided next to the brush.
Specifically, the head part is provided with a split head part provided with the liquid reservoir part and an ultrasonic wave generating part, and a split head part provided with a brush part in which the hair bundle is implanted. Is preferred.
Also, a preferred embodiment is one in which a brush part in which a hair bundle is implanted is provided in the head part, and the inner wall of the liquid reservoir part is constituted by the hair bundle of the brush part.
Further, it is preferable to provide a liquid supply path for supplying a cleaning liquid to the liquid reservoir, and to provide a check valve at an opening or a middle part of the end of the liquid supply path.
Further, it is preferable that a liquid storage tank for supplying a cleaning liquid to the liquid reservoir is provided inside the handle portion.

第１図は本発明の第１実施形態に係る超音波口腔清掃具の内部構成を示す概略図、第２図は同じく超音波口腔清掃具のヘッド部を示す部分斜視図、第３図は同じくヘッド部の平面図、第４図は毛束を径方向に沿って複数列設けた変形例を示す部分斜視図、第５図は液溜め部をヘッド部の凹部に嵌め込んだ変形例を示す説明図、第６図は本発明の第２実施形態に係る超音波口腔清掃具の要部を示す部分斜視図、第７図は本発明の第３実施形態に係る超音波口腔清掃具の要部を示す部分斜視図、第８図は本発明の第４実施形態に係る超音波口腔清掃具を示す斜視図。  FIG. 1 is a schematic view showing the internal configuration of the ultrasonic oral cleaning tool according to the first embodiment of the present invention, FIG. 2 is a partial perspective view showing the head part of the ultrasonic oral cleaning tool, and FIG. FIG. 4 is a partial perspective view showing a modified example in which a plurality of rows of hair bundles are provided along the radial direction, and FIG. 5 shows a modified example in which the liquid reservoir is fitted into the recess of the head unit. FIG. 6 is a partial perspective view showing the main part of the ultrasonic oral cleaning tool according to the second embodiment of the present invention, and FIG. 7 is the main part of the ultrasonic oral cleaning tool according to the third embodiment of the present invention. FIG. 8 is a perspective view showing an ultrasonic oral cleaning tool according to a fourth embodiment of the present invention.

次に、本発明の実施形態を添付図面に基づき詳細に説明する。
第１図は、本発明に係る超音波口腔清掃具の内部構成を示す概略図であり、第１図〜第４図は第１実施形態、第６図は第２実施形態、第７図は第３実施形態を示し、図中符号１は超音波口腔清掃具、２は液溜め部、３はブラシ部、４は超音波発生部、５は供給手段をそれぞれ示している。
尚、以下の各実施形態では、先端のヘッド部に毛束が植設されたブラシ部を設けた超音波歯ブラシを示しているが、該ブラシ部を設けないものや歯ブラシ以外の口腔清掃具に適用することも勿論できる。
本発明の超音波口腔清掃具１は、先端のヘッド部１１に突設した液溜め部２より洗浄用液を口腔内に供給し、該洗浄用液を振動伝達媒体として超音波振動により通常のブラッシングでは届かない歯周ポケット内のプラークを除去したり、舌や口腔内粘膜に付着した残渣等を除去するものであり、前記洗浄用液の供給量を１秒当たり前記液溜め部２の内部容積の１／１０〜６／５に設定することで、前記洗浄用液の表面張力の作用により、該洗浄用液が常に満たされた状態の液溜め部２を前記歯周ポケットや舌等に押し当て効率よく洗浄可能としたものである。
先ず、第１図〜第４図に基づき本発明の第１実施形態を説明する。
超音波口腔清掃具１は、使用時に把持されるハンドル部１０と、口腔内に挿入されて洗浄部として機能する先端のヘッド部１１と、これら双方を連続的に連結して前記ヘッド部１１を口腔内の奥にまで至らしめるための頸部１２とより構成されており、合成樹脂材料を用いて一体成形した前記ヘッド部１１と頸部１２が、同じく合成樹脂材料で成形されたハンドル部１０に装着されている。尚、ヘッド部１１を頸部１２に着脱自在に設けたものや、全体を合成樹脂材料で一体成形したものなど、従来から提供されている各種形態を適宜採用することができる。
前記ヘッド部１１には、第２図及び第３図に示すように、先端側が開放された内部空間層２１を有する液溜め部２が突設されている。この液溜め部２は、好ましくはシリコーンゴムや熱可塑性エラストマー等より成形される筒状の弾性部材であり、口腔内に直接接触することとなる先端開口面２０は、緩やかな凸状面に形成して歯周ポケットに密着可能な形状とすることが好ましい実施例である。
同じくヘッド部１１における前記液溜め部２の周囲には、複数のフィラメントを密集させた毛束３０を複数立設してなるブラシ部３が設けられている。前記ブラシ部の毛束３０は従来と同様のものが採用でき、第４図に示すように、毛束３０を径方向に沿って複数列設けたものも勿論可能であり、外周側の毛束３０は、後述の液溜め部２に隣接する該液溜め部２と略同一高さの毛束よりも高く設定することが好ましい。
この液溜め部２は、開口面積が３．０〜１００ｍｍ２、好ましくは３．０〜３０ｍｍ２、厚みが０．１〜３．０ｍｍに設定され、ヘッド部１１の上面に底面が固定されてなり、内部空間層２１からなる内部容積は０．０１〜１．０ｍＬに設定されている。前記厚みが０．１ｍｍより小さいと歯周ポケット等に押さえ付けた際に強度が維持できずに開口部が潰れてしまい効率の良い清掃ができなくなる虞があり、３．０ｍｍより大きいと全体が大きくなり狭い部位に届かない等使い勝手が悪くなる虞がある。
前記液溜め部２の深さは、即ち当該液溜め部２の突出高さとなるが、深さすぎると突出高さが大きくなって口腔内における洗浄作業に不都合が生じ、浅すぎるとある程度の高さが必要な毛束３０との関係で先端開口面２０が周囲の毛束３０の先端高さよりも低くなって当該先端開口面２０を歯周ポケット等に接触させることが困難となる。また、前記内径は大きすぎると表面張力により洗浄用液を保持することが困難となる。前記液溜め部２の内部容積については、容積が大きすぎると表面張力により洗浄用液を保持することが困難であり、小さすぎると清掃面積が小さく洗浄効率が低下し、より好ましくは０．０１〜０．５ｍＬに設定される。
前記液溜め部２の他の例としては、縦方向に沿った複数の貫通孔を有するハニカム状の弾性部材からなるものも可能であり、この場合、柱状の内部空間層が複数形成されることとなる。また、内部に複数の連通空間層を有するスポンジ状の弾性部材より液溜め部を構成することも可能である。
これらは、先端開口面に小さな開口が多数集合することとなるため、上述の表面張力による洗浄用液の保持力を更に向上させることができ、複数の内部空間層からなる総内部容積は、上記液溜め部２の内部容積と同様、０．０１〜１．０ｍＬ、より好ましくは０．０１〜０．５ｍＬに設定される。
上記液溜め部２下方の同じくヘッド部１１には、超音波発生部４として圧電素子４０が埋設されるとともに、前記ハンドル部１０には、前記圧電素子４０に高周波を供給するための超音波発振回路４１及び該回路に電源を供給する蓄電池４２が内装されており、前記圧電素子４０により発生した超音波振動は、前記液溜め部２に充填され且つ該液溜め部２の先端より口腔内に供給される洗浄用液を媒体として口腔内の歯周ポケット等に伝達され、当該部位の洗浄が為されるのである。
また、前記液溜め部２に洗浄用液を供給するための供給手段５として、前記ハンドル部１０の内部には洗浄用液が充填される貯液タンク５０が設けられ、該貯液タンク５０から頸部１２を介して液溜め部２の内部空間層２１に連通する送液路５２が形成されている。液溜め部２内部の底面となるヘッド部１１上面には、第３図に示すように、前記送液路５２の末端となる給液孔５２ａが開口しており、該給液孔５２ａには液溜め部２に徐々に充填される洗浄用液の自重により該液が逆流することを防止する逆止弁６が設けられており、該逆止弁によって洗浄用液のより緩慢な供給も可能とされているのである。この送液路５２を通じて当該内部空間層２１に洗浄用液が供給され、開口面２０から徐々に溢れ出る洗浄用液を介して超音波振動を伝達することになる。
尚、本例ではヘッド上面に開口する給液孔５２ａから液溜め部２の裏面より洗浄用液を供給しているが、本発明はこれに限らず、例えば第５図に示すように、ヘッド上面に液溜め部２を嵌め込む凹部７を設け、該凹部の内壁７０に開口する給液孔５２ａから前記液溜め部２側壁に穿設した横孔２３を通じて内部空間層に洗浄用液を供給するものも好ましい実施例である。
前記送液路５２の始端或いは途中部には、貯液タンク５０の洗浄用液を前記給液孔５２ａに向けて送給するための送液ポンプ５１が設けられている。符号５３は駆動モーターであり、分銅８０を回転させて毛束３０を振動させる。これら供給手段５としては従来知られている方法を適宜用いることが可能であり、本例では送液ポンプ５１により貯液タンク５０から洗浄用液を吸引するものを示しているが、その他、ポンプにより貯液タンクから送り出すものや、貯液タンク内容積をローラー等で縮小させて送り出すもの、圧縮空気を貯液タンク内に入れて送り出すものなども採用できる。更に、流量を正確に送り出すために、送液路５２に流量調整のための弁を付加することも有効な手段である。
前記送液ポンプ５１による洗浄用液の供給量は、液溜め部２の内部容積に応じて効率の良い最適量に設定され、具体的には、１秒当たりの供給量が液溜め部２の内部容積の１／１０〜６／５となるように設定され、具体的には、１〜１２００μＬ／ｓｅｃで供給される。１秒当たりの供給量が内部容積の６／５よりも多いと、口の中に水が溢れ、非効率的で使い勝手が悪くなり、ハンドル部に内装可能な内部容積５〜１５ｍＬ程度の貯液タンクで一回の洗浄を行うことが困難となり、その逆に１／１０よりも少ないと、内部に空間が生じて超音波振動の伝達性が低下し、当該超音波による清掃効率が低下する。
ここで、洗浄開始から前記液溜め部２に洗浄用液が充填されるまでの間は超音波洗浄ができないため、当該充填に要する数秒の間は、ポンプ動作を早め、供給量を増やすように駆動制御することが好ましく、このような供給量の切換えスイッチを設けたり供給量の増減を自動制御することが望ましい。
尚、貯液タンク５０、又は、貯液タンク５０、給液ポンプ５１及び駆動用モーター５３を当該超音波口腔清掃具１の内部に設ける代わりに、別体の外部装置として構成し、当該装置の給液タンクより別途給液管をハンドル部１０の送液路５２に接続して供給するものとしても良い。
前記液溜め部２に供給される洗浄用液は、専用の薬剤が用いられ、本例では、貯液タンク５０として前記薬剤を充填したカートリッジが交換可能に装着される。尚、前記洗浄用液は、蒸留水や水道水等の水のみからなるものであっても良い。
また、毛束が立設される前記ブラシ部３をヘッド部本体とは別体構成された植毛台に設けるとともに、該植毛台を回転させる機構を設けてなるものも好ましい実施例である。
次に、第６図は、本発明の超音波口腔清掃具１の第２実施形態を示しており、前記弾性部材からなる液溜め部２を前記ヘッド部１１におけるブラシ部３の隣りに併設したものである。図示した状態はブラシ部３が歯毛束先端側に位置しているが、超音波振動による洗浄を行う際には、該ヘッド部１１の先端側と基端側を逆に向けて頸部１２に装着し、或いは１８０度回転させ、図で基端側に位置している液溜め部２を先端側に位置を変更させて洗浄することとなる。
当該ヘッド部１１内部の図示しない送液路は、液溜め部２の底の給液孔から延びてヘッド部１１の先端面に開口し、前記液溜め部２をヘッド部先端側にセットした場合に、当該開口が頸部１２の送液路に接続されるように構成されるのであり、また、ヘッド部１１と頸部１２には接続端子が設けられ、液溜め部２を先端側にセットした場合に圧電素子への電流路が前記端子を介して接続される。
このように液溜め部２とブラシ部３を併設したものでは、ブラシ洗浄と超音波洗浄のそれぞれの場合に応じてブラシ部３及び液溜め部２を最適なヘッド先端位置にセットすることができ、より効率よく口腔洗浄を行うことが可能となる。
第７図は、本発明の超音波口腔清掃具１の第３実施形態を示しており、ブラシ部３において複数の毛束３０をリング状に密に整列させ、これら複数の毛束３０、・・・で構成される内壁２２により液溜め部２Ａを構成したものである。少なくとも当該内壁２２を構成する各毛束３０は強い横弾性力を有し且つ互いに密に植毛されており、これにより別途弾性部材を用いることなく、洗浄用液を漏らさず充填できる内部空間層２１Ａが形成されており、コスト上昇が抑制されている。
第８図は、本発明の超音波口腔清掃具１の第４実施形態を示しており、ブラシ部３を液溜め部２に対して前後方向に往復振動可能に構成したものである。具体的には、ヘッド部１１をそれぞれ上下に分割構成し、上側の分割ヘッド部１３に毛束３０を植設してブラシ部３を構成するとともに、下側の分割ヘッド部１４に前記分割ヘッド部１３を貫通して上方に突設する水溜め部２及び図示しない超音波発生部を設けたものである。これら上下の分割ヘッド部１３、１４は、同じく上下に分割構成された分割頸部１５、１６の先端側にそれぞれ一体形成されており、分割頸部１６の内部には上記第１実施形態と同様、ハンドル部１０の送液ポンプ５１から延びて前記液溜め部２の内部空間層に連通する送液路や分割ヘッド部１４に設けられる圧電素子に電力を供給する配線等が内装され、他方の分割頸部１５は、ハンドル部１０の駆動モータ５３の回転運動を前後方向への往復運動に変換出力するギアボックス５４の出力軸に接続され、分割ヘッド部１３とともに分割ヘッド部１４及び分割頸部１６に対して前後方向に往復振動する。本例では、ハンドル部１０の内部に装着される貯液タンク５０がチューブ容器で構成され、これによりポンプ５１で吸引される液中へのエア混入が未然に防止されている。このようなチューブ容器は、例えば二枚のシート材を対面させるとともに当該シート材の対向する各一端中央部にノズル材を挟持させ、左右側端縁及び当該ノズル材を設けた中央部を含む一端縁を熱溶着して密封することにより他端が開口した袋体を形成した後、該開口より洗浄用液を充填して当該他端縁を熱溶着してなるソフトチューブを用いることができる。Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a schematic view showing the internal configuration of the ultrasonic oral cleaning device according to the present invention, FIG. 1 to FIG. 4 are the first embodiment, FIG. 6 is the second embodiment, and FIG. In the figure, reference numeral 1 denotes an ultrasonic oral cleaning tool, 2 denotes a liquid reservoir, 3 denotes a brush part, 4 denotes an ultrasonic generator, and 5 denotes a supply unit.
In each of the following embodiments, an ultrasonic toothbrush provided with a brush part in which a bunch of hair is implanted in the head part at the tip is shown. Of course, it can also be applied.
The ultrasonic oral cleaning tool 1 of the present invention supplies a cleaning liquid into the oral cavity from a liquid reservoir 2 projecting from a head portion 11 at the tip, and uses ultrasonic cleaning as a vibration transmission medium for the cleaning liquid. It removes plaque in the periodontal pocket that cannot be reached by brushing, or removes residue adhering to the tongue or mucous membrane in the oral cavity. The supply amount of the cleaning liquid is set to the inside of the reservoir 2 per second. By setting the volume to 1/10 to 6/5, due to the action of the surface tension of the cleaning liquid, the liquid reservoir 2 that is always filled with the cleaning liquid is placed in the periodontal pocket, tongue, etc. It can be washed efficiently by pressing.
First, a first embodiment of the present invention will be described with reference to FIGS.
The ultrasonic oral cleaning tool 1 includes a handle portion 10 that is gripped during use, a head portion 11 that is inserted into the oral cavity and functions as a cleaning portion, and continuously connects the head portion 11 to the head portion 11. The head portion 11 and the neck portion 12 which are integrally formed using a synthetic resin material are formed of a neck portion 12 for reaching the back of the oral cavity, and the handle portion 10 is also formed of the synthetic resin material. It is attached to. Various forms conventionally provided, such as those in which the head portion 11 is detachably provided on the neck portion 12 and those in which the entire head portion 11 is integrally formed of a synthetic resin material, can be appropriately employed.
As shown in FIGS. 2 and 3, the head portion 11 is provided with a liquid reservoir portion 2 having an internal space layer 21 having an open front end side. The liquid reservoir 2 is a cylindrical elastic member that is preferably formed from silicone rubber, thermoplastic elastomer, or the like, and the tip opening surface 20 that is in direct contact with the oral cavity is formed in a gently convex surface. Thus, it is a preferred embodiment to have a shape that can be in close contact with the periodontal pocket.
Similarly, around the liquid reservoir portion 2 in the head portion 11, a brush portion 3 is provided in which a plurality of hair bundles 30 in which a plurality of filaments are densely arranged are erected. The bristles 30 of the brush portion can be the same as the conventional ones, and as shown in FIG. 4, it is possible to provide a plurality of bristles 30 along the radial direction. 30 is preferably set higher than the hair bundle having a height substantially the same as that of the liquid reservoir 2 adjacent to the liquid reservoir 2 described later.
The liquid reservoir 2 has an opening area of 3.0 to 100 mm 2 , preferably 3.0 to 30 mm 2 , a thickness of 0.1 to 3.0 mm, and a bottom surface fixed to the upper surface of the head 11. Thus, the internal volume consisting of the internal space layer 21 is set to 0.01 to 1.0 mL. If the thickness is less than 0.1 mm, the strength may not be maintained when pressed against a periodontal pocket or the like, and the opening may be crushed, making it impossible to perform efficient cleaning. There is a risk that it will become unusable, for example, it will become large and will not reach a narrow part.
The depth of the liquid reservoir 2 is the protrusion height of the liquid reservoir 2, but if the depth is too deep, the protrusion height becomes large, resulting in inconvenience in the cleaning operation in the oral cavity. Therefore, the tip opening surface 20 is lower than the tip height of the surrounding hair bundle 30, and it becomes difficult to bring the tip opening surface 20 into contact with a periodontal pocket or the like. On the other hand, if the inner diameter is too large, it becomes difficult to hold the cleaning liquid due to surface tension. As for the internal volume of the liquid reservoir 2, if the volume is too large, it is difficult to hold the cleaning liquid due to surface tension, and if it is too small, the cleaning area is small and the cleaning efficiency is lowered, more preferably 0.01. Set to ~ 0.5 mL.
Another example of the liquid reservoir 2 may be a honeycomb-shaped elastic member having a plurality of through-holes along the vertical direction. In this case, a plurality of columnar internal space layers are formed. It becomes. It is also possible to configure the liquid reservoir portion from a sponge-like elastic member having a plurality of communication space layers inside.
Since many small openings gather at the tip opening surface, these can further improve the retention of the cleaning liquid due to the surface tension described above, and the total internal volume consisting of a plurality of internal space layers is as described above. Similar to the internal volume of the liquid reservoir 2, it is set to 0.01 to 1.0 mL, more preferably 0.01 to 0.5 mL.
A piezoelectric element 40 is embedded as an ultrasonic wave generating unit 4 in the head unit 11 below the liquid reservoir 2 and an ultrasonic oscillation for supplying a high frequency to the piezoelectric element 40 is provided in the handle unit 10. A circuit 41 and a storage battery 42 for supplying power to the circuit are incorporated, and the ultrasonic vibration generated by the piezoelectric element 40 is filled in the liquid reservoir 2 and enters the oral cavity from the tip of the liquid reservoir 2. The supplied cleaning liquid is transmitted to a periodontal pocket or the like in the oral cavity using the medium as a medium, and the site is cleaned.
Further, as the supply means 5 for supplying the cleaning liquid to the liquid reservoir 2, a liquid storage tank 50 filled with the cleaning liquid is provided in the handle portion 10. A liquid feed path 52 that communicates with the internal space layer 21 of the liquid reservoir 2 via the neck 12 is formed. As shown in FIG. 3, a liquid supply hole 52a serving as an end of the liquid supply path 52 is opened on the upper surface of the head part 11 which is the bottom surface inside the liquid reservoir 2, and the liquid supply hole 52a has a liquid supply hole 52a. A check valve 6 is provided to prevent the liquid from flowing backward due to the weight of the cleaning liquid gradually filled in the liquid reservoir 2, and the check valve can also supply the cleaning liquid more slowly. It is said that. The cleaning liquid is supplied to the internal space layer 21 through the liquid supply path 52, and ultrasonic vibration is transmitted through the cleaning liquid that gradually overflows from the opening surface 20.
In this example, the cleaning liquid is supplied from the back surface of the liquid reservoir 2 through the liquid supply hole 52a opened on the upper surface of the head. However, the present invention is not limited to this, and for example, as shown in FIG. A concave portion 7 for fitting the liquid reservoir portion 2 is provided on the upper surface, and a cleaning liquid is supplied to the internal space layer through a lateral hole 23 formed in the side wall of the liquid reservoir portion 2 from a liquid supply hole 52a opened in the inner wall 70 of the concave portion. This is also a preferred embodiment.
A liquid feed pump 51 for feeding the liquid for cleaning the liquid storage tank 50 toward the liquid feed hole 52a is provided at the beginning or in the middle of the liquid feed path 52. Reference numeral 53 denotes a drive motor, which rotates the weight 80 to vibrate the hair bundle 30. Conventionally known methods can be appropriately used as the supply means 5, and in this example, the liquid feeding pump 51 sucks the cleaning liquid from the liquid storage tank 50. It is also possible to employ one that is sent out from the liquid storage tank, one that is sent out after the internal volume of the liquid storage tank is reduced by a roller or the like, and one that is sent out by putting compressed air into the liquid storage tank. In addition, it is also an effective means to add a valve for adjusting the flow rate to the liquid supply path 52 in order to accurately deliver the flow rate.
The supply amount of the cleaning liquid by the liquid feed pump 51 is set to an optimum amount that is efficient and according to the internal volume of the liquid reservoir 2. Specifically, the supply amount per second is the amount of the liquid reservoir 2. The internal volume is set to 1/10 to 6/5, and specifically, 1 to 1200 μL / sec is supplied. If the supply rate per second is more than 6/5 of the internal volume, water will overflow in the mouth, making it inefficient and unusable, and a liquid storage volume of about 5-15 mL that can be built in the handle. If it is difficult to perform cleaning once in the tank, and conversely, if it is less than 1/10, a space is created in the interior, the transmission of ultrasonic vibrations is reduced, and the cleaning efficiency by the ultrasonic waves is reduced.
Here, since the ultrasonic cleaning cannot be performed from the start of cleaning until the liquid reservoir 2 is filled with the cleaning liquid, the pump operation is accelerated and the supply amount is increased for a few seconds required for the filling. It is preferable to perform drive control, and it is desirable to provide such a supply amount changeover switch or to automatically control increase and decrease of the supply amount.
Instead of providing the liquid storage tank 50, or the liquid storage tank 50, the liquid supply pump 51, and the drive motor 53 inside the ultrasonic oral cleaning tool 1, the liquid storage tank 50 is configured as a separate external device. A separate liquid supply pipe may be connected to the liquid supply path 52 of the handle portion 10 and supplied from the liquid supply tank.
As the cleaning liquid supplied to the liquid reservoir 2, a dedicated medicine is used, and in this example, a cartridge filled with the medicine is replaceably mounted as the liquid storage tank 50. The cleaning liquid may be composed only of water such as distilled water or tap water.
Also, a preferred embodiment is one in which the brush portion 3 on which the hair bundle is erected is provided on a flocking table that is configured separately from the head portion main body and a mechanism for rotating the flocking table is provided.
Next, FIG. 6 shows a second embodiment of the ultrasonic oral cleaning tool 1 of the present invention, and a liquid reservoir portion 2 made of the elastic member is provided adjacent to the brush portion 3 in the head portion 11. Is. In the illustrated state, the brush portion 3 is located on the distal end side of the tooth bundle. However, when performing cleaning by ultrasonic vibration, the distal end side and the proximal end side of the head portion 11 are directed oppositely to the neck portion 12. Or is rotated 180 degrees, and the liquid reservoir 2 located on the proximal end side in the figure is changed to the distal end side for cleaning.
When the liquid supply path (not shown) inside the head unit 11 extends from the liquid supply hole at the bottom of the liquid reservoir 2 and opens at the front end surface of the head unit 11, the liquid reservoir 2 is set on the front end side of the head unit 11. In addition, the opening is configured to be connected to the liquid feeding path of the neck 12, and connection terminals are provided on the head 11 and the neck 12, and the liquid reservoir 2 is set on the distal end side. In this case, a current path to the piezoelectric element is connected via the terminal.
In the case where the liquid reservoir 2 and the brush portion 3 are provided in this manner, the brush portion 3 and the liquid reservoir 2 can be set at the optimum head tip position in accordance with each of brush cleaning and ultrasonic cleaning. It becomes possible to perform oral cleaning more efficiently.
FIG. 7 shows a third embodiment of the ultrasonic oral cleaning tool 1 according to the present invention, in which a plurality of hair bundles 30 are closely arranged in a ring shape in the brush portion 3, and the plurality of hair bundles 30,. The liquid reservoir 2A is constituted by the inner wall 22 constituted by. The hair bundles 30 constituting at least the inner wall 22 have a strong lateral elastic force and are closely planted with each other, so that an internal space layer 21A can be filled without leaking cleaning liquid without using an additional elastic member. The cost increase is suppressed.
FIG. 8 shows a fourth embodiment of the ultrasonic oral cleaning tool 1 according to the present invention, in which the brush portion 3 is configured to be capable of reciprocating in the front-rear direction with respect to the liquid reservoir portion 2. Specifically, each of the head parts 11 is divided into upper and lower parts, a hair bundle 30 is implanted in the upper divided head part 13 to form the brush part 3, and the divided head is arranged in the lower divided head part 14. A water reservoir 2 that protrudes upward through the portion 13 and an ultrasonic generator (not shown) are provided. These upper and lower divided head portions 13 and 14 are integrally formed on the distal end sides of divided neck portions 15 and 16 that are similarly divided into upper and lower portions, and the inside of the divided neck portion 16 is the same as in the first embodiment. , A liquid supply path extending from the liquid supply pump 51 of the handle portion 10 and communicating with the internal space layer of the liquid reservoir portion 2, wiring for supplying electric power to the piezoelectric element provided in the divided head portion 14, etc. The divided neck portion 15 is connected to an output shaft of a gear box 54 that converts the rotational motion of the drive motor 53 of the handle portion 10 into a reciprocating motion in the front-rear direction, and the divided head portion 14 and the divided neck portion together with the divided head portion 13. 16 oscillates back and forth in the front-rear direction. In this example, the liquid storage tank 50 mounted inside the handle portion 10 is formed of a tube container, thereby preventing air from being mixed into the liquid sucked by the pump 51. Such a tube container has, for example, two sheet members facing each other and a nozzle member sandwiched between the opposite one end central portions of the sheet material, and one end including a left and right edge and a central portion provided with the nozzle material. It is possible to use a soft tube in which a bag body having the other end opened is formed by thermally welding and sealing the edge, and then the cleaning liquid is filled from the opening and the other edge is thermally welded.

本発明の超音波口腔清掃具によれば、液溜め部に空気層が生じることがなく伝達効率を維持できる程度のより少ない洗浄用液を供給し、これにより該液溜め部の先端開口部より溢れる洗浄用液を振動伝達媒体として歯周ポケット内の歯垢等を効率よく除去でき、使い勝手が良く、貯液タンクの容量も小さいもので十分であり、歯ブラシ内部に装着することも可能となる。
また、前記ヘッド部が、前記液溜め部と超音波発生部を備えた分割ヘッド部と、前記毛束が植設されるブラシ部を備えた分割ヘッド部とを併設してなるので、使用者は部品の疲労に応じて分割ヘッド部を別々に交換することも可能となり、また、ブラシ部を備えた分割ヘッド部を相対運動させる構造を採用しても、互いに独立して運動させることができ、液溜め部が前記ブラシ部の運動により振動を受けて液放出時に暴れるといった事態も未然に回避でき、狙った部位に洗浄用液を供給することができる。
また、前記液溜め部に洗浄用液を供給するための送液路を内部に設け、該送液路末端の開口部又は途中部に逆止弁を設けたので、液溜め部に徐々に充填される洗浄用液の自重により該液が逆流することが防止され、洗浄用液のより緩慢な供給が可能となる。According to the ultrasonic oral cleaning tool of the present invention, less cleaning liquid is supplied to the extent that the transfer efficiency can be maintained without generating an air layer in the liquid reservoir, and thereby, from the front end opening of the liquid reservoir. Overflowing cleaning fluid can be used as a vibration transmission medium to effectively remove plaque, etc. in the periodontal pocket, it is easy to use, a small storage tank capacity is sufficient, and it can be installed inside the toothbrush. .
In addition, since the head part is provided with a split head part having the liquid reservoir part and an ultrasonic wave generating part and a split head part having a brush part in which the hair bundle is implanted, the user It is also possible to replace the split head part separately according to the fatigue of the parts, and even if a structure in which the split head part with the brush part is moved relative to each other is adopted, it can be moved independently of each other. In addition, it is possible to avoid a situation in which the liquid reservoir is vibrated by the movement of the brush portion and becomes violated when the liquid is discharged, and the cleaning liquid can be supplied to the target site.
In addition, a liquid supply path for supplying the cleaning liquid to the liquid reservoir is provided inside, and a check valve is provided at the opening or in the middle of the end of the liquid supply path, so the liquid reservoir is gradually filled. The washing liquid is prevented from flowing back due to its own weight, and the washing liquid can be supplied more slowly.

Claims (12)

先端のヘッド部に突設され、その突出方向に沿った先端側が開放された液溜め部と、該液溜め部の下方に配設された超音波発生部と、発生した超音波の振動伝達媒体としての洗浄用液を前記液溜め部に供給するための供給手段とを備えさせ、前記洗浄用液の１秒当たりの供給量を、前記液溜め部の内部容積の１／１０〜６／５としたことを特徴とする超音波口腔清掃具。A liquid reservoir portion protruding from the head portion at the front end and opened at the front end side along the protruding direction, an ultrasonic wave generating portion disposed below the liquid reservoir portion, and a vibration transmission medium for the generated ultrasonic waves Supply means for supplying the cleaning liquid to the liquid reservoir, and the supply amount of the cleaning liquid per second is 1/10 to 6/5 of the internal volume of the liquid reservoir. An ultrasonic oral cleaning tool characterized by that. 前記液溜め部の内部容積を０．０１〜１．０ｍＬとしてなる請求項１記載の超音波口腔清掃具。The ultrasonic oral cleaning tool according to claim 1, wherein the internal volume of the liquid reservoir is 0.01 to 1.0 mL. 前記液溜め部の開口面積を３．０〜１００ｍｍ２としてなる請求項１又は２記載の超音波口腔清掃具。Ultrasonic oral hygiene device as in Claim 1 or 2, wherein comprising the opening area of the liquid reservoir as 3.0～100Mm 2. 前記液溜め部が、前記ヘッド部に設けた筒状の弾性部材からなる請求項１〜３の何れか１項に記載の超音波口腔清掃具。The ultrasonic oral cleaning tool according to any one of claims 1 to 3, wherein the liquid reservoir is made of a cylindrical elastic member provided on the head. 前記弾性部材の厚みを０．１〜３．０ｍｍとしてなる請求項４記載の超音波口腔清掃具。The ultrasonic oral cleaning tool according to claim 4, wherein the elastic member has a thickness of 0.1 to 3.0 mm. 前記ヘッド部に、毛束が植設されたブラシ部を設けてなる請求項１〜５の何れか１項に記載の超音波口腔清掃具。The ultrasonic oral cleaning tool according to any one of claims 1 to 5, wherein a brush part in which a hair bundle is implanted is provided on the head part. 前記ヘッド部に、毛束が植設されたブラシ部を設け、該ブラシ部の複数の毛束で囲まれた内部に前記液溜め部を設けてなる請求項１〜６の何れか１項に記載の超音波口腔清掃具。The head part is provided with a brush part in which hair bundles are implanted, and the liquid reservoir part is provided inside the brush part surrounded by a plurality of hair bundles. The described ultrasonic oral cleaning tool. 前記ヘッド部に、毛束が植設されたブラシ部を設け、該ブラシ部の隣りに前記液溜め部を併設してなる請求項１〜６の何れか１項に記載の超音波口腔清掃具。The ultrasonic oral cleaning tool according to any one of claims 1 to 6, wherein a brush part in which a hair bundle is implanted is provided in the head part, and the liquid reservoir part is provided adjacent to the brush part. . 前記ヘッド部が、前記液溜め部と超音波発生部を備えた分割ヘッド部と、前記毛束が植設されるブラシ部を備えた分割ヘッド部とを併設してなる請求項６〜８の何れか１項に記載の超音波口腔清掃具。9. The head according to claim 6, wherein the head part is provided with a split head part having the liquid reservoir part and an ultrasonic wave generating part, and a split head part having a brush part in which the hair bundle is implanted. The ultrasonic oral cavity cleaning tool of any one of Claims. 前記ヘッド部に、毛束が植設されたブラシ部を設け、該ブラシ部の毛束により前記液溜め部の内壁を構成してなる請求項１〜３の何れか１項に記載の超音波口腔清掃具。The ultrasonic wave according to any one of claims 1 to 3, wherein a brush part in which a hair bundle is implanted is provided on the head part, and an inner wall of the liquid reservoir part is configured by the hair bundle of the brush part. Oral cleaning tool. 前記液溜め部に洗浄用液を供給するための送液路を内部に設け、該送液路末端の開口部又は途中部に逆止弁を設けてなる請求項１〜１０の何れか１項に記載の超音波口腔清掃具。11. A liquid feeding path for supplying a cleaning liquid to the liquid reservoir is provided inside, and a check valve is provided at an opening or a middle part of the liquid feeding path end. The ultrasonic oral cleaning tool according to 1. 前記液溜め部に洗浄用液を供給するための貯液タンクをハンドル部の内部に設けてなる請求項１〜１１の何れか１項に記載の超音波口腔清掃具。The ultrasonic oral cleaning tool according to any one of claims 1 to 11, wherein a liquid storage tank for supplying a cleaning liquid to the liquid reservoir is provided inside the handle portion.
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